CN101860425A - Method and device for mapping resources of physical hybrid retransmission indicator channel - Google Patents

Abstract

The invention discloses a method and a device for mapping resources of a physical hybrid retransmission indicator channel. The method comprises the following steps: determining the position of PHICH resources of a first code stream based on a dynamic cyclic shift parameter of a DMRS in a PHICH resource mapping formula corresponding to the first code stream, wherein the dynamic cyclic shift parameter is the signaling value of the de-modulation reference signal (DMRS) in uplink scheduling/downlink control information (DCI); indirectly indicating the position of PHICH resources of a second code stream by using the position of PHICH resources of the first code stream; and carrying out resource mapping on the position of PHICH resources of the first code stream and the position of PHICH resources of the second code stream. The invention effectively realizes the mapping of PHICH resources under UL MIMO scenarios.

Description

The method for mapping resource of physical mixing retransmission indicating chanel and device

Technical field

The present invention relates to the communications field, relate in particular to the method for mapping resource and the device of a kind of physical mixing retransmission indicating chanel (Physical hybrid ARQ indicator channel abbreviates PHICH as).

Background technology

Long Term Evolution (Long Term Evolution abbreviates LTE as) system is the essential planning of third generation partnership.When the LTE system adopts regular circulation prefix (Normal CyclicPrefix), time slot comprise 7 length on/descending symbol, when the LTE system adopts extended cyclic prefix (Extended Cyclic Prefix), time slot comprise 6 length on/descending symbol.

Fig. 1 is that the bandwidth according to correlation technique is the schematic diagram of the LTE system physical Resource Block of 5MHz, as shown in Figure 1, a Resource Unit (Resource Element, abbreviate RE as) be a subcarrier in the OFDM symbol, and a downlink resource piece (Resource Block abbreviates RB as) is made of continuous 12 subcarriers and 7 continuous (in the time of extended cyclic prefix being 6) OFDM symbols.A Resource Block is 180kHz on frequency domain, is a general time slots length on the time domain, when carrying out resource allocation, can be that base unit distributes with the Resource Block.In sub-frame of uplink, Physical Uplink Control Channel (Physical Uplink Control Channel, abbreviate PUCCH as) be positioned on two sidebands of whole frequency band, the centre is used for transmitting physical Uplink Shared Channel (PhysicalUplink Shared Channel, abbreviate PUSCH as), this channel is used to carry upstream data.

In LTE system definition following several physical channels:

Physical Broadcast Channel (Physical broadcast channel, abbreviate PBCH as): the information of this channel bearing comprises the downlink bandwidth of the frame number of system, system, the cycle of physical mixed retransfer channel and the parameter N that is used for determining physical mixing retransmission indicating chanel (Physical hybridARQ indicator channel abbreviates PHICH as) channel group number _g∈ 1/6,1/2,1,2}.

Physical Downlink Control Channel (Physical downlink control channel abbreviates PDCCH as): be used to carry the uplink and downlink schedule information, and uplink power control information.

Wherein, Downlink Control Information (the DownlinkControl Information of Physical Downlink Control Channel carrying, abbreviating DCI as) form (format) is divided into following several: DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3,3A etc., wherein, format 0 is used to indicate the scheduling of Physical Uplink Shared Channel (Physical uplink shared channel abbreviates PUSCH as); DCI format 1,1A, 1B, 1C, 1D are used for the different transmission mode of the Physical Downlink Shared Channel (Physical Downlink Shared Channel abbreviates PDSCH as) of single transport piece; DCI format 2,2A are used for the different transmission mode of space division multiplexing; DCI format 3,3A are used for the transmission of the power control instruction of Physical Uplink Control Channel (Physicaluplink control channel abbreviates PUCCH as) and PUSCH.

Physical Uplink Shared Channel: be used to carry uplink transmission data.The resource allocation that this channel is relevant, modulation and encoding scheme, the cyclic shift control informations such as (Cyclic shift abbreviate CS as) of demodulated reference signal (Demodulation ReferenceSignal abbreviates DMRS as) is provided with DCI format 0 by uplink authorization (UL grant).

Physical mixing retransmission indicating chanel (Physical Hybrid ARQ IndicatorChannel abbreviates PHICH as): the ACK/NACK feedback information that is used to carry uplink transmission data.The number of PHICH channel group, duration (duration) determined by the system message among the PBCH of the descending carrier at place, and the time-frequency position of PHICH is by sequence index decision in the group number of antenna configurations, sub-district ID and the PHICH of the number of PHICH channel group, duration, sub-district PBCH and the group.

For frame structure 1 (FDD frame structure), the number of the PHICH of reservation group Determine by following formula (a):

Formula (a)

N _g{ 1/6,1/2,1,2} is determined by the system message among the PBCH of the descending carrier (Downlink carrier abbreviates DLcarrier as) at place ∈, the group number of PHICH

From 0 to

Numbering, wherein, It is the bandwidth of the descending carrier at PHICH place.

For frame structure 2 (tdd frame structure), the every subframe of number of PHICH group is

M wherein _iBy following table 1 decision.

Table 1

The PHICH resource is right by sequence Determine,

Be the group number of PHICH,

Be the index of orthogonal sequence in the group, determine by following resource mapping formula (b):

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, n _DMRSBe configuration in nearest DCI format 0, as shown in table 2, be configured under the subframe n transmission situation, PUSCH is semi-static at subframe n-k _PUSCHIn do not have corresponding PDCCH transmission, perhaps when inserting the relevant PUSCH of request at random and transmit, n _DMRS=0, k _PUSCHBe meant that PUSCH transmits spacing with the subframe of PDCCH in TDD configuration, as shown in table 3.

Table 2

DMRS dynamic cyclic shift parameters among the DCI format 0	??n DMRS
		??000	??0
??001	??1
		??010	??2
??011	??3
		??100	??4
??101	??5
		??110	??6
??111	??7

The K of table 3TDD configuration 0-6 _PUSCHThe parameter form

The configuration of this parameter makes between MU-MIMO user in the sub-district has different cyclic shifts, makes MU-MIMO user's quadrature in the sub-district, suppresses interference in the sub-district.UE determines the cyclic shift amount of demodulated reference signal according to dynamic cyclic shift parameters according to the corresponding relation of table 4.

Table 4

Be the spreading factor of PHICH modulation, to conventional CP,

Expansion CP,

It is the minimum index of the Physical Resource Block (Physical ResourceBlock abbreviates PRB as) of ascending resource distribution;

Up permission single antenna of LTE Release-8 sends.N in the formula (b) _DMRSFor UE, in DCI format 0, only can dispose 1.

The sequences Design of PUSCH DMRS, the time-frequency expansion of DMRS sequence:

$r^{\mathrm{PUSCH}}(m\·M_{\mathrm{sc}}^{\mathrm{RS}}+n)=r_{u,v}^{\left(\mathrm{\α}\right)}\left(n\right)$

m＝0，1

$n=0,...,M_{\mathrm{sc}}^{\mathrm{RS}}-1$

$M_{\mathrm{sc}}^{\mathrm{RS}}=M_{\mathrm{sc}}^{\mathrm{PUSCH}}$

α＝2πn _cs/12

$n_{\mathrm{cs}}=(n_{\mathrm{DMRS}}^{\left(1\right)}+n_{\mathrm{DMRS}}^{\left(2\right)}+n_{\mathrm{PRS}}\left(n_s\right))\mathrm{mod}12$

M=n _sMod2, m=0, the first, the second time slot of 1 respectively corresponding each subframe.Totally 12 kinds of cyclic shift value, PUSCH DMRS bandwidth is identical with the PUSCH bandwidth.

Advanced long-term evolution system (Long-Term Evolution Advanced abbreviates LTE-A as) is the evolution version of LTE Release-8.Require backward compatibility in the senior international wireless communication system demand that International Telecommunications Union's radio communication group proposes.Demand in LTE-Advanced and LTE Release-8 backward compatibility is meant: the terminal of LTE Release-8 can be worked in the network at LTE-Advanced; The terminal of LTE-Advanced can be worked in the network of LTE Release-8.In addition, LTE-Advanced should be able to comprise frequency spectrum configuration (for example, the continuous frequency spectrum resource of 100MHz) the down work wideer than LTE Release-8, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Consider compatibility with LTE Release-8, for bandwidth greater than 20MHz, adopt the mode of spectrum aggregation (Carrier aggregation), that is, two or more component carriers (component carrier) are assembled to support the downstream transmission bandwidth greater than 20MHz.

Terminal in the LTE-A system can send one or more component carriers simultaneously by its ability, and uply can adopt single many antenna transmission of user technology, comprise transmission diversity (Transmit Diversity, abbreviate TxD as) and spatial reuse (Multiple InputMultiple Output abbreviates MIMO as).Each component carrier supports at most 2 streams of code words to transmit simultaneously, and the mapping ruler of correctly the replying of this 2 streams of code words/wrong responses information (Acknowledgement/Negative Acknowledgement abbreviates ACK/NACK as) needs standardization.Layer mapping (the Codeword to layer mapping) rule of up streams of code words is with the downstream layers mapping ruler, and Fig. 2 is the schematic diagram according to the layer mapping of the up streams of code words of LTE-A of correlation technique.

Under the MIMO scene, determined to introduce DMRS time domain orthogonal sign indicating number (OrthogonalCover Code abbreviates OCC as), transmission for up PUSCH, promptly on 2 DMRS symbols of subframe, adopt OCC sign indicating number (1,1) or (1 ,-1) to improve the orthogonality of terminal room.Fig. 3 is under the MIMO scene, the schematic diagram of 4 layers of transmission of up 4 antennas and employing OCC sign indicating number.

In correlation technique, uplink scheduling DCI format 0 does not support the upstream multi-antenna transmission, under LTE-A upstream multi-antenna transmitting scene, uplink scheduling DCI need increase form newly, suspense is made DCI format X, if use DCI format X to give each layer of UE (layer) configuration suitable DMRS cyclic shift relevant parameter, determined at present OCC and DMRS cyclic shift are carried out combined coding.Signaling consumption is restricted to 3 bits.Such as, there is company to propose, the cyclic shift (Cyclic shift) of the corresponding Layer 0 of this 3 bit signalling, the cyclic shift of other Layer is indicated indirectly, and OCC also can be indicated indirectly by this 3 bit.

And under the MIMO scene, may introduce DMRS time domain orthogonal sign indicating number (OrthogonalCover Code abbreviates OCC as), promptly on 2 RS symbols of time slot, adopt (1,1) or (1 ,-1) to improve the orthogonality of terminal room.Fig. 3 is under the MIMO scene, the schematic diagram of 4 layers of transmission of up 4 antennas and employing OCC sign indicating number.

PHICH mapping scheme about 2 streams of code words (Codeword abbreviates CW as) of up multiple-input and multiple-output (Uplink Multiple Input MultipleOutput, UL MIMO) has following 3 kinds of selections at present:

Method one: the PHICH that distinguishes 2 CW by the cyclic shift indicated value (Cyclic ShiftIndicator abbreviates CSI as) relevant with the PUSCH transmission.

The PRBs that method two: PUSCH distributes uses different PRB index to distinguish the PHICH of 2 CW more than 1.

For method one, because the DMRS signaling among the uplink scheduling DCI is 3 bits, if the R8 mode is continued to use in the PHICH of first streams of code words mapping, the indirect mapping mode possibility more complicated of second streams of code words; For method two, generally speaking, the PHICH that can only guarantee 2 CW is in different groups, and sequence index is the same, and anti-channel fading performance is poor.

Summary of the invention

At single antenna PHICH resource mapping method in the correlation technique and be not suitable for the PHICH resource mapping method of Uplink MIMO, for this reason, main purpose of the present invention is to provide a kind of improved PHICH method for mapping resource and device, to address the above problem.

To achieve these goals, according to an aspect of the present invention, provide the method for mapping resource of a kind of physical mixing retransmission indicating chanel PHICH, be applied to many antenna transmission of uplink single user scene.

Method for mapping resource according to physical mixing retransmission indicating chanel of the present invention comprises: the PHICH resource location of determining first streams of code words according to the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence, wherein, dynamic cyclic shift parameters is the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI; Use the PHICH resource location of the indirect indication of PHICH resource location second streams of code words of first streams of code words; On the first streams of code words PHICH resource location and the second streams of code words PHICH resource location, carry out the resource mapping.

Preferably, the PHICH resource of first streams of code words is positioned at different PHICH groups with the PHICH resource of second streams of code words, wherein, the PHICH resource of first streams of code words is different sequence set with the orthogonal sequence of the PHICH resource of second streams of code words in the PHICH group, and sequence set comprises real part sequence set and imaginary part sequence set.

Preferably, the PHICH group index that uses first streams of code words indirectly the PHICH group index of indication second streams of code words comprise: the difference that the PHICH group index of first streams of code words equals the PHICH group index of the multiple of number of PHICH group of reservation of system configuration and second streams of code words subtracts 1; Perhaps, the spacing of the group index of the PHICH of second streams of code words and the first streams of code words group index is organized half of number for the PHICH that reserves.

Preferably, use the PHICH group index of first streams of code words to indicate the PHICH group index of second streams of code words to comprise indirectly:

The PHICH group of first streams of code words

For $n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Determine the PHICH group index of second streams of code words by one of following formula

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Wherein,

Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

Preferably, use the PHICH orthogonal sequence index of first streams of code words to indicate the PHICH orthogonal sequence index of second streams of code words to comprise indirectly:

The difference that the PHICH orthogonal sequence index of second streams of code words equals the PHICH orthogonal sequence index of the twice of spreading factor and first streams of code words subtracts 1.

Perhaps,

The spacing of the interior orthogonal sequence index of the orthogonal sequence index and the first streams of code words group is in the group of the PHICH of second streams of code words

Wherein,

Spreading factor for PHICH.

Preferably, use the PHICH orthogonal sequence index of first streams of code words to indicate the PHICH orthogonal sequence index of second streams of code words to comprise indirectly:

Sequence index in the PHICH group of first streams of code words

For

PHICH orthogonal sequence index by second streams of code words of one of following formula

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI, Be the spreading factor of PHICH, to conventional CP, Expansion CP, Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

The resource mapping apparatus of a kind of physical mixing retransmission indicating chanel PHICH is provided to achieve these goals, according to a further aspect in the invention.

Resource mapping apparatus according to physical mixing retransmission indicating chanel of the present invention comprises: determination module is used for using the demodulated reference signal DMRS signaling value of uplink scheduling DCI to determine the resource location of the PHICH of first streams of code words as the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence; Indicating module is used to use the PHICH resource location of first streams of code words to indicate the PHICH resource location of second streams of code words of PHICH indirectly; Mapping block is used for carrying out the resource mapping on the first streams of code words PHICH resource location and the second streams of code words PHICH resource location.

Preferably, indicating module comprises: first determines submodule, is used for determining the PHICH group index of second streams of code words

Second determines submodule, is used for determining the PHICH orthogonal sequence index of second streams of code words

Preferably, first determines submodule, is used for determining by one of following formula the PHICH group index of second streams of code words

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value;

Second determines submodule, is used for determining by one of following formula the PHICH orthogonal sequence index of second streams of code words

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1$

Wherein,

n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP,

Expansion CP,

Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

By the present invention, mapping mode to physical mixed retransfer channel under the MIMO scene redefines, solved in the correlation technique up single antenna resource mapping method and be not suitable for problem, and then can effectively realize PHICH resource mapping under the UL MIMO scene with the defeated pattern of multi-antenna transmitting.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the LTE system physical Resource Block schematic diagram of 5MHz for the bandwidth according to correlation technique;

Fig. 2 is the layer mapping schematic diagram according to the up streams of code words of LTE-A of correlation technique;

Fig. 3 is under the MIMO scene according to correlation technique, 4 layers of transmission of up 4 antennas and adopt the schematic diagrames of OCC sign indicating number;

Fig. 4 is the flow chart according to the method for mapping resource of the PHICH of the embodiment of the invention;

Fig. 5 is the structured flowchart according to the resource mapping apparatus of the PHICH of the embodiment of the invention; And

Fig. 6 is the preferred construction block diagram according to the resource mapping apparatus of the PHICH of the embodiment of the invention.

Embodiment

Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

The invention provides the method for mapping resource of a kind of PHICH, Fig. 4 is the flow chart according to the method for mapping resource of the PHICH of the embodiment of the invention, as shown in Figure 4, comprising:

Step S402, determine the PHICH resource location of described first streams of code words according to the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence, wherein, described dynamic cyclic shift parameters is the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI;

Step S404 uses the PHICH resource location of first streams of code words to indicate the PHICH resource location of second streams of code words of PHICH indirectly;

Step S406 carries out the resource mapping on the first streams of code words PHICH resource location and the second streams of code words PHICH resource location.

In the correlation technique, uplink scheduling DCI format 0 does not support the upstream multi-antenna transmission, under LTE-A upstream multi-antenna transmitting scene, uplink scheduling DCI need increase form newly, give UE every layer (layer) with the suitable DMRS cyclic shift relevant parameter of 3 bit configuration if use newly-increased form, signaling consumption is bigger, so use limited signaling consumption, as the indication of the DMRS cyclic shift territory of 3 bits is one group of DMRS actual cycle shift amount of a plurality of layers.And under the MIMO scene, can introduce DMRS time domain orthogonal sign indicating number, this orthogonal code and DMRS cyclic shift are carried out combined coding.Thereby single antenna PHICH resource mapping method and be not suitable for the defeated pattern of the multi-antenna transmitting with multilayer.Adopt such scheme can effectively realize PHICH resource mapping under the UL SU-MIMO scene.

Preferably, the PHICH resource of first streams of code words is positioned at different PHICH groups with the PHICH resource of second streams of code words, wherein, the PHICH resource of first streams of code words is different sequence set with the orthogonal sequence of the PHICH resource of second streams of code words in the PHICH group, and sequence set comprises real part sequence set and imaginary part sequence set.

By this preferred embodiment, define the relation of the PHICH resource location of first streams of code words and second streams of code words.

Preferably, step S404 comprises: the PHICH group index that the uses first streams of code words indirectly PHICH group index of indication second streams of code words comprises: the difference that the PHICH group index of first streams of code words equals the PHICH group index of the multiple of number of PHICH group of reservation of system configuration and second streams of code words subtracts 1; Perhaps, the spacing of the group index of the PHICH of second streams of code words and the first streams of code words group index is organized half of number for the PHICH that reserves.

By the preferred embodiment, realized second streams of code words group index can indicate indirectly by the group index of first streams of code words, reduced signaling traffic load.

Preferably, step S404 comprises: use the PHICH group index of first streams of code words to indicate the PHICH group index of second streams of code words to comprise indirectly:

The PHICH group of first streams of code words For

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Determine the PHICH group index of second streams of code words by one of following formula

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Wherein, Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

By the preferred embodiment, realized second streams of code words group index can indicate indirectly by the group index of first streams of code words, reduced signaling traffic load.

Preferably, step S404 comprises: use the PHICH orthogonal sequence index of first streams of code words to indicate the PHICH orthogonal sequence index of second streams of code words to comprise indirectly:

The difference that the PHICH orthogonal sequence index of second streams of code words equals the PHICH orthogonal sequence index of the twice of spreading factor and first streams of code words subtracts 1.

Perhaps,

The spacing of the interior orthogonal sequence index of the orthogonal sequence index and the first streams of code words group is in the group of the PHICH of second streams of code words Wherein,

Spreading factor for PHICH.

By the preferred embodiment, realized second streams of code words the quadrature index can indicate indirectly by the quadrature index of first streams of code words, reduced signaling traffic load.

Preferably, step S404 comprises: use the PHICH orthogonal sequence index of first streams of code words to indicate the PHICH orthogonal sequence index of second streams of code words to comprise indirectly:

Sequence index in the PHICH group of first streams of code words

For

PHICH orthogonal sequence index by second streams of code words of one of following formula

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1,$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP, Expansion CP, Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

By the preferred embodiment, realized second streams of code words the quadrature index can indicate indirectly by the quadrature index of first streams of code words, reduced signaling traffic load.

In order to help to understand the foregoing description, further describe other a plurality of preferred embodiments of the present invention below.

Need to prove that in following a plurality of preferred embodiments, the PHICH resource location of first streams of code words is right by sequence

Determine.

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the group number of PHICH,

Be the index of orthogonal sequence in the group,

Be the spreading factor of PHICH modulation, to conventional CP,

Expansion CP,

Be the minimum index of the Physical Resource Block (PhysicalResource Block abbreviates PRB as) of ascending resource distribution, Number for the PHICH group reserved.

Preferred embodiment one

When having two streams of code words to send on up certain component carrier of UE, downlink transfer need be distributed two PHICH for two streams of code words of this this component carrier of UE.Suppose that k the corresponding PHICH resource of stream is On the concrete method of salary distribution, satisfy following relation:

DMRS parameter in the PHICH resource mapping formula of first streams of code words is the DMRS signaling value among the uplink scheduling DCI.

The PHICH resource location of second streams of code words is indicated indirectly by the PHICH resource location of first streams of code words.

Be formulated as follows:

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=I_{\mathrm{PHICH}}\×N_{\mathrm{PHICH}}^{\mathrm{group}}\×2+N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]-1---\left(2\right)$

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-\mathrm{mod}(n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right],N_{\mathrm{PHICH}}^{\mathrm{group}})-1{+I}_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(3\right)$

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(4\right)$

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(8\right)$

Wherein,

Be the group number of PHICH,

Be the index of orthogonal sequence in the group,

Be the number of the PHICH group of reservation, Be the spreading factor of PHICH modulation, to conventional CP,

Expansion CP,

On the above-mentioned first definite streams of code words PHICH resource location and the second streams of code words PHICH resource location, carry out the resource mapping.

The preferred embodiment has realized having reduced signaling traffic load by the group number of the PHICH that reserves and the mapping position that spreading factor is indicated second streams of code words indirectly.

Preferred embodiment two

When having two streams of code words to send on up certain component carrier of UE, downlink transfer need be distributed two PHICH for two streams of code words of this this component carrier of UE.Suppose that k the corresponding PHICH resource of stream is

On the concrete method of salary distribution, satisfy following relation:

DMRS parameter in the PHICH resource mapping formula of first streams of code words is the DMRS signaling value among the uplink scheduling DCI.

The PHICH resource location of second streams of code words is indicated indirectly by the PHICH resource location of first streams of code words.

Be formulated as follows:

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=\mathrm{Mod}(n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]+C,N_{\mathrm{PHICH}}^{\mathrm{group}})---\left(10\right)$

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=\mathrm{Mod}(n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]+D,2N_{\mathrm{SF}}^{\mathrm{PHICH}})---\left(11\right)$

Wherein, C, D are constants.Such as,

Be the group number of PHICH,

Be the index of orthogonal sequence in the group,

Be the number of the PHICH group of reservation,

Be the spreading factor of PHICH modulation, to conventional CP,

Expansion CP,

On the above-mentioned first definite streams of code words PHICH resource location and the second streams of code words PHICH resource location, carry out the resource mapping.

The preferred embodiment has realized having reduced signaling traffic load by the group number of the PHICH that reserves and the mapping position that spreading factor is indicated second streams of code words indirectly.

Preferred embodiment three

When having two streams of code words to send on up certain component carrier of UE, downlink transfer need be distributed two PHICH for two streams of code words of this this component carrier of UE.Suppose that k the corresponding PHICH resource of stream is

On the concrete method of salary distribution, satisfy following relation:

DMRS parameter in the PHICH resource mapping formula of first streams of code words is the DMRS signaling value among the uplink scheduling DCI.

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(12\right)$

Wherein, C[0]=0, D[0]=0;

The PHICH resource location of second streams of code words is indicated indirectly by the PHICH resource location of first streams of code words.

Be formulated as follows:

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}}+C\left[1\right])\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(14\right)$

Wherein,

Be the group number of PHICH,

Be the index of orthogonal sequence in the group,

Be the number of the PHICH group of reservation,

Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSDemodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI, Be the spreading factor of PHICH modulation, to conventional CP,

Expansion CP,

On the above-mentioned first definite streams of code words PHICH resource location and the second streams of code words PHICH resource location, carry out the resource mapping.

The preferred embodiment has realized passing through

n _DMRSIndicate the mapping position of second streams of code words indirectly etc. known parameter, reduced signaling traffic load.

The present invention also provides the resource mapping apparatus of a kind of PHICH, Fig. 5 is the structured flowchart according to the resource mapping apparatus of the PHICH of the embodiment of the invention, as shown in Figure 5, this device comprises indicating module 52, determination module 54 and mapping block 56, below said structure is described in detail:

Determination module 52 is used for using the demodulated reference signal DMRS signaling value of uplink scheduling DCI to determine the resource location of the PHICH of first streams of code words as the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence;

Indicating module 54 is connected to determination module 52, and the PHICH resource location of second streams of code words of PHICH is indicated indirectly by the PHICH resource location of first streams of code words that determination module 52 is determined;

Mapping block 56 is connected to determination module 52 and indicating module 54, is used for carrying out the resource mapping on the second streams of code words PHICH resource location of the first streams of code words PHICH resource location that determination module 52 is determined and indicating module 54 indications.

Fig. 6 is the preferred construction block diagram according to the resource mapping apparatus of the PHICH of the embodiment of the invention, and as shown in Figure 6, indicating module 54 comprises that first determines submodule 542 and second definite submodule 544, below said structure is described in detail:

First determines submodule 542, is connected to determination module 52, is used for determining the PHICH group index of second streams of code words

Second determines submodule 544, is connected to determination module 52, is used for determining the PHICH orthogonal sequence index of second streams of code words

Preferably, first determines submodule 542, is used for determining by one of following formula the PHICH group index of second streams of code words

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(17\right)$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(18\right)$

Wherein,

Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value;

Second determines submodule 544, is used for determining by one of following formula the PHICH orthogonal sequence index of described second streams of code words

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP,

Expansion CP,

Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

Need to prove that the resource mapping apparatus of the PHICH that describes among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, do not repeat them here.

In sum, by the present invention, mapping mode to physical mixed retransfer channel under the MIMO scene redefines, solved in the correlation technique up single antenna resource mapping method and be not suitable for problem, and then effectively realized PHICH resource mapping under the ULMIMO scene with the defeated pattern of multi-antenna transmitting.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. the method for mapping resource of a physical mixing retransmission indicating chanel PHICH is applied to many antenna transmission of uplink single user scene, it is characterized in that, comprising:

Determine the PHICH resource location of described first streams of code words according to the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence, wherein, described dynamic cyclic shift parameters is the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI;

Use the PHICH resource location of the indirect indication of PHICH resource location second streams of code words of described first streams of code words;

On described first streams of code words PHICH resource location and the described second streams of code words PHICH resource location, carry out the resource mapping.

2. method according to claim 1 is characterized in that,

The PHICH resource of described first streams of code words is positioned at different PHICH groups with the PHICH resource of described second streams of code words, wherein, the PHICH resource of described first streams of code words is different sequence set with the orthogonal sequence of the PHICH resource of described second streams of code words in described PHICH group, and described sequence set comprises real part sequence set and imaginary part sequence set.

3. method according to claim 1 and 2 is characterized in that, uses the PHICH group index of described first streams of code words to indicate the PHICH group index of described second streams of code words to comprise indirectly:

The difference that the PHICH group index of described first streams of code words equals the described PHICH group index of the multiple of number of PHICH group of reservation of system configuration and described second streams of code words subtracts 1; Perhaps,

The spacing of the group index of the PHICH of described second streams of code words and the described first streams of code words group index is organized half of number for the PHICH that reserves.

4. method according to claim 3 is characterized in that, uses the PHICH group index of described first streams of code words to indicate the PHICH group index of described second streams of code words to comprise indirectly:

The PHICH group of first streams of code words For

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Determine the PHICH group index of described second streams of code words by one of following formula

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Wherein,

Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

5. method according to claim 1 and 2 is characterized in that, uses the PHICH orthogonal sequence index of described first streams of code words to indicate the PHICH orthogonal sequence index of described second streams of code words to comprise indirectly:

The difference that the PHICH orthogonal sequence index of described second streams of code words equals the described PHICH orthogonal sequence index of the twice of spreading factor and described first streams of code words subtracts 1;

Perhaps,

The spacing of the interior orthogonal sequence index of orthogonal sequence index and the described first streams of code words group is in the group of the PHICH of described second streams of code words

Wherein,

Spreading factor for PHICH.

6. method according to claim 1 and 2 is characterized in that, uses the PHICH orthogonal sequence index of described first streams of code words to indicate the PHICH orthogonal sequence index of described second streams of code words to comprise indirectly:

Sequence index in the PHICH group of first streams of code words

For

Determine the PHICH orthogonal sequence index of second streams of code words by one of following formula

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1,$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP,

Expansion CP,

Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

7. method according to claim 5 is characterized in that, uses the PHICH orthogonal sequence index of described first streams of code words to indicate the PHICH orthogonal sequence index of described second streams of code words to comprise indirectly:

Sequence index in the PHICH group of first streams of code words

For

Determine the PHICH orthogonal sequence index of second streams of code words by one of following formula

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1,$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP,

Expansion CP,

Be the minimum index of the Physical Resource Block of ascending resource distribution,

Be the number of the PHICH group reserved, Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

8. the resource mapping apparatus of a physical mixing retransmission indicating chanel PHICH is characterized in that, comprising:

Determination module is used for using the demodulated reference signal DMRS signaling value of uplink scheduling DCI to determine the resource location of the PHICH of described first streams of code words as the dynamic cyclic shift parameters of the DMRS in the PHICH resource mapping formula of first streams of code words correspondence;

Indicating module, the PHICH resource location that is used to use described first streams of code words is the PHICH resource location of second streams of code words of the described PHICH of indication indirectly;

Mapping block is used for carrying out the resource mapping on described first streams of code words PHICH resource location and the described second streams of code words PHICH resource location.

9. device according to claim 8 is characterized in that, described indicating module comprises:

First determines submodule, is used for determining the PHICH group index of described second streams of code words

Second determines submodule, is used for determining the PHICH orthogonal sequence index of described second streams of code words

10. device according to claim 9 is characterized in that,

Described first determines submodule, is used for determining by one of following formula the PHICH group index of described second streams of code words

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{group}}\left[1\right]=N_{\mathrm{PHICH}}^{\mathrm{group}}-n_{\mathrm{PHICH}}^{\mathrm{group}}\left[0\right]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}-1+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}},$

Wherein,

Be the minimum index of the Physical Resource Block of ascending resource distribution, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the number of the PHICH group of reservation,

Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value;

Described second determines submodule, is used for determining by one of following formula the PHICH orthogonal sequence index of described second streams of code words

Perhaps,

Perhaps,

$n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[1\right]=2N_{\mathrm{SF}}^{\mathrm{PHICH}}-n_{\mathrm{PHICH}}^{\mathrm{seq}}\left[0\right]-1,$

Wherein, n _DMRSBe the demodulated reference signal DMRS signaling value among the uplink scheduling Downlink Control Information DCI,

Be the spreading factor of PHICH, to conventional CP, Expansion CP,

Be the minimum index of the Physical Resource Block of ascending resource distribution, Be the number of the PHICH group reserved, Expression rounds downwards x, and (x) mod (y) expression x is to y delivery value.

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